Los Angeles Mayor-elect Eric Garcetti will hold a free public party in downtown's Grand Park as part of his inauguration festivities on Sunday.

Hollywood, a major backer of his campaign, will be on hand. Jimmy Kimmel is emceeing, and techno master Moby, accompanied by a choir, will kick off the event with a song.

The event will include Steampunk carnival games, multicultural music and an oath of office administered by the 13-year-old daughter of a janitor.

"We've been saying this transition is less about symbolism and more about work," said Yusef Robb, Garcetti's chief spokesman. "This inauguration is definitely about sending a message to the people of Los Angeles that the power comes from you and that's the way it should be."

Garcetti's speech that will probably carry a "back to basics" theme, Robb said, an emphasis the mayor-elect has talked about with community groups across the city as he prepares to take power Monday.

The inauguration is scheduled to begin at 6 p.m. Sunday on the Spring Street steps outside City Hall. It's only ceremonial: Garcetti will officially be sworn in Friday by City Clerk June Lagmay, Robb said, but a power shift won't take place until midnight Sunday, when termed-out Mayor Antonio Villaraigosa leaves the post.

Besides Moby, there will be performances by Afghan American singer Ariana Delawari and two-time Grammy winner Melanie Fiona.